Generator Cable, 3/3C w/ Ground + 18/8C, 100 Amps, 17kW-24kW, 600V

3/3C + 18/8C w/ #8 Ground Generator Cable (TC-ER-JP) is an all-in-one, composite power and control tray cable engineered specifically for whole-house standby generator installations (such as Generac, Kohler, and Briggs & Stratton) rated between 17kW and 24kW.

Instead of pulling separate heavy power feeders and individual control wiring through conduit, this composite cable bundles the main 100 Amp 240V power lines, the ground line, and the low-voltage control/sensing conductors under a single, durable outer jacket.

ELECTRICAL AMPACITY & RATING

• Current Rating: 100 AMPS (based on 75°C terminal temperature limits under NEC rules).

• Generator Compatibility: Engineered for 17kW to 24kW residential and light commercial air-cooled or liquid-cooled standby generators.

• Voltage Rating: 600 Volts maximum.

Key Features

• All-in-One Cable Assembly: Combines high-amperage power feeders, ground, and up to 8 control/utility wires into a single jacketed run, significantly reducing labor and conduit material costs.

• Type TC-ER-JP Rated: Approved as Tray Cable - Exposed Run with Joist Pull (JP) rating, meaning it can be pulled through joists and open framing without requiring continuous conduit in residential applications (per NEC Article 336).

• Direct Burial & Outdoor Approved: The heavy-duty PVC outer sheath is sunlight/UV-resistant and rated for direct burial, tray installation, or transition indoors.

• Flame & Weather Resistance: Rated for cold-bend temperatures down to -40°C and meets strict FT4 / IEEE flame tests.

Cable Layer Architecture (From Core to Outer Sheath)

1. Power Conductors (3 x 3 AWG): Stranded bare copper cores with THHN/THWN PVC/Nylon insulation (typically color-coded Black, Red, White) for carrying full 240V generator output to the Automatic Transfer Switch (ATS).

2. Ground Conductor (1 x 8 AWG): Stranded bare copper conductor (Green or bare) for equipment grounding.

3. Control/Sensing Conductors (8 x 18 AWG): Stranded bare copper wires used for utility sensing, battery charging, transfer switch controls, and generator status monitoring.

4. Fillers & Binder Tape: Non-hygroscopic polypropylene fillers and clear mylar binder tape hold the assembly round and tight.

5. Outer Jacket: Heavy-duty, sunlight-resistant, direct-burial PVC jacket (typically black or orange).

Technical Specifications

• Power Conductor Size: 3 AWG Stranded Copper (3 Conductors)

• Ground Conductor Size: 8 AWG Stranded Copper (1 Conductor)

• Control Conductor Size: 18 AWG Stranded Copper (8 Conductors)

• Insulation Type: PVC with Nylon coating (THHN/THWN-2 rated)

• Jacket Material: Sunlight-resistant, moisture-impervious PVC

• Overall Outside Diameter: Approx. 0.951 in to 0.98 in

• Approximate Weight: ~885 lbs per 1000 feet

• Temperature Limits: 90°C Dry / 75°C Wet (restricted to 75°C terminal rating for 100A ampacity calculations)

• Standards & Listings: UL Standard 1277 (Type TC-ER), UL 83, FT4/IEEE 1202 Flame Rated, NEC Article 336 (TC-ER-JP), RoHS Compliant

Technical Note Regarding Installation: While this cable is rated for open runs inside joists (JP rating) and direct burial outdoors, always check with your local Authority Having Jurisdiction (AHJ). When transitioning from underground or exposed wall surfaces into enclosures or through walls, approved cable glands or strain-relief fittings designed for Type TC cable must be used to maintain weather-tight seals and electrical bonding.

CABLE TYPE: 3/3C + 18/8C w/ 8 AWG Ground Type TC-ER-JP Multi-Conductor Generator Power & Control Cable (600V, 100A)

DISCLAIMER: The technical information provided is for general reference only. All generator and Automatic Transfer Switch (ATS) installations must comply with the National Electrical Code (NEC), local municipal building codes, and manufacturer instructions, and must be performed by a qualified licensed electrician.

General Shipping Information

In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.

You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.

Expedited Shipping

Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).

Returns

You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.

Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.

Orders on any items with a material value of $50 or less are non-returnable.